Lighting Needs For 120 Reef?

[Ace5high]

I need to know what some lighting options are for a 120 Gal 48" tank?

Has anyone been sucsessful with T5's only? Do I have to get MH's?

Right now I just have a good bit of green star polyp, and two different green Hammers. I would like to be able to support a full spectrum of coral including SPS as well as a clam or two down the road...

 

[Bifferwine]

Your tank is probably very deep if it's a 48" long 120. I would go with MH for that depth.